Belligerent (adjective)

1. Hostile or aggressive in nature, especially towards others.
2. Engaged in or tending to engage in conflict or warfare.
3. Argumentative or quarrelsome in nature.

Origin:

From the latin belliger, meaning to wage war. the term has been in use in english since the 17th century to describe someone who is hostile or aggressive in nature.

Examples:

1. The belligerent man was constantly getting into arguments and fights, and was known for his quick temper.
2. The country was described as being belligerent, as it was constantly engaged in conflict with its neighbors.
3. The belligerent attitude of the company was causing problems with its partners and customers.
4. The belligerent tone of the conversation made it clear that the two people were not getting along.
5. The belligerent behavior of the group made it difficult for the peace talks to proceed.